Recording head and recording apparatus using the same

(19)

(11)

EP 0 816 082 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	02.06.1999 Bulletin 1999/22

(43)	Date of publication A2:
	07.01.1998 Bulletin 1998/02

(21)	Application number: 97110413.8

(22)	Date of filing: 25.06.1997

(51)	International Patent Classification (IPC)⁶: B41J 2/05

(84)	Designated Contracting States:
	AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(30)

Priority:

26.06.1996 JP 166089/96
26.07.1996 JP 197241/96
30.08.1996 JP 231081/96
12.11.1996 JP 300417/96

(71)	Applicant: CANON KABUSHIKI KAISHA
	Ohta-ku Tokyo 146 (JP)

(72)	Inventors:
	Imanaka, Yoshiyuki, c/o Canon Kabushiki Kaisha Tokyo (JP) Kasamoto, Masami, c/o Canon Kabushiki Kaisha Tokyo (JP) Furukawa, Tatsuo, c/o Canon Kabushiki Kaisha Tokyo (JP) Mori, Toshihiro, c/o Canon Kabushiki Kaisha Tokyo (JP) Ozaki, Teruo, c/o Canon Kabushiki Kaisha Tokyo (JP) Watanabe, Hidenori, c/o Canon Kabushiki Kaisha Tokyo (JP) Mochizuki, Muga, c/o Canon Kabushiki Kaisha Tokyo (JP)

(74)	Representative: Weser, Wolfgang
	Dres. Weser & Martin, Patentanwälte, Radeckestrasse 43 81245 München 81245 München (DE)

(54)	Recording head and recording apparatus using the same

(57) Upon executing printing by latching an input digital image signal temporarily stored in a shift register (502) by a latch circuit (501), and energizing and driving a heater (401) using a power transistor (410) using an nMOSFET on the basis of the latched image signal, a voltage converter (111) boosts a voltage representing the ON state of the latched digital signal, and applies the boosted voltage to the power transistor (410).

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